Quiz Hard 2 Categories Quizzes 0 Quiz Hard 2 1 / 30 Electronagitivity of oxygen is 2.1 2.5 2.4 3.5 2 / 30 Collodion or pyroxlin is Cellulose tri acetate mixture of cellulose mono and di acetates Cellulose trinitrate mixture of cellulose mono and dinitates 3 / 30 Which of the following is the basic indicator for titration of NH4OH with HCI? Eosin Eriochrome book Phenolphthalein Methyl red Methyl Orange 4 / 30 Which metal can produce dihydrogen gas by reaction with dil. H2SO4? Fe Cu Pt Ag 5 / 30 If reaction A has an activation energy of 250 kJ and reaction B has an activation energy of 100 kJ, which of the following statements must be correct? If reaction A is exothermic and reaction B is endothermic then reaction A is favored kinetically The energy of reaction B must be greater than the energy of reaction A At the same temperature the rate of reaction B is greater than the rate of reaction A The rate of reaction A at 25 C equal4 the rate of reaction B at 100 C. The energy of reaction A must be greater than the energy of reaction If. 6 / 30 Hydrolysis of protiens gives γ-amino acids Amixture of all of these β-amino acids α-amino acids 7 / 30 Arrangement of peptide chains of protien in space to form helix structure is refered to as Secondary structure Quaternary structure Primary structure Tertiary structure 8 / 30 The study of ciled long peptide chains of protien to give 3-dimensional structure is study of Primary structure Secondary structure Tertiary structure Quaternary structure 9 / 30 Colander stock is a process in paper making in which? Thickness of the paper is reduced' both a and b Moisture is removed None Surface of paper is made smooth 10 / 30 Organic farming is the technique of raising crops through uses of? Resistant varieties None Manures All of these Biofertilizera 11 / 30 Which of the following techniques is used to separate a mixture of cations? size exclusion exclusion chromatography GC FPLC Ion-exchange chromatography 12 / 30 The substances added to the soil in very small amounts (about 6 grams to 200 grams per acre) are called Macronutrients all of these none of these Micronutrients Fertilizers 13 / 30 Relative order of acidity of oxy acid HCIO> HClO2>HClO3>HClO4 HCIO> HClO2>HClO3>HClO4 HCIO3> HClO2>HClO>HClO4 HCIO2> HClO4>HClO3>HClO 14 / 30 Which of the following techniques is used to reduce the need for large volumes of organic solvents? Solid-phase extraction TLC Paper chromatography Electrophoresis Gel permeation 15 / 30 Which cast iron is hard and wear resistance? malleable iron None of the above gray iron white iron ductile iron 16 / 30 What field of study encompasses the Procurement and production of metals? metalgraphy material science Metallurgy nanochemistry geology 17 / 30 Noble gases are sparingly soluble in water owing to dipole-induced dipole interactions induced dipole - instantaneous dipole interaction Dipole-dipole interactions hydrogen bonding 18 / 30 Methods used to ascent the series of aldoses is known as Ruff's methods Kilian synthesis Weerman's reaction Wohl's synthesis 19 / 30 The hybridization of S in SO2 is sp3 dsp2 sp sp2 20 / 30 Colour in transition metal compound is attributed to complete ns subshell small-sized metal ions Absorption of light iin UV region incomplete (n-1) d subshell 21 / 30 When the concentration of reactant molecules is increased, the rate of reaction increases. The best explanation is: As the reactant concentration increases the average kinetic energy of molecules increases the order of reaction increases. the activation energy increases. the rate constant increases the frequency of molecular collisions increases. 22 / 30 Which one of the following sets of elements has the strongest tendency to form positive ions in gaseous state? Li, Na, K O,S,Se Be,Mg,Ca F,Cl,Br 23 / 30 Given that a reaction absorbs enerpy and has an activation energy of 50 kJ/mol. which of the following statements are correct? (Hint: Draw the potential energy diagram.) 1. The reverse reaction has an activation energy equal to 50 kJ/mol 2. The reverse reaction has an activation energy less than 50 kJ/mol 3. The reverse reaction has an activation energy greater than 50 kJ/mol 4. The change in internal energy is less than zero. 5. The change in internal energy is greater than zero 3 and 5 2 and 4 2 and 5 1 and 4 3 and 4 24 / 30 In nucleosides the ring size of sugar and configuration at anomeric are respectively Pyranose,β-anomer Furanose,β-anomer Pyranose,α-anomer Furanose,α-anomer 25 / 30 The compound insoluble in acetic acid Calcium oxide Calcium carbonate Calcium oxalate Calcium hydroxide 26 / 30 The oxidation state of Pt in Xe+ [PtF6] - is 5 4 none 6 27 / 30 Used in TV sets and sound movies to give ready response to electric potential Ne Kr Ar He 28 / 30 The concept is also known as electron pair-donor acceptor system Bronsted-Lowery Lux-Flood Usanvich Lewis 29 / 30 Which of the following is renewable resource of energy? Geothermal energy All of the above Wind power Hydropower Solar power 30 / 30 Buffer solutions are used to increase pH none Resist thr pH decrease the pH Your score is Share: Quiz Dad Previous post Quiz Hard 1 October 1, 2022 Next post Quiz Hard 3 October 1, 2022 You may also like Quiz Hard 5 1 October, 2022 Quiz Hard 4 1 October, 2022 Quiz Hard 3 1 October, 2022